Means for heating bakers&#39; ovens.



P. TRAOHSLER.

MEANS FOR HEATING BAKERS OVENS. APPLICATION. FILED SEPT. s, 1908.

91 9,400, Patented Apr. 27, 1909.,

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' I O WITNESSES INVENTOR XQZQM 73 ATTORNEK.

ruer' NORRIS PETERS :0. WASHINGTON, n. c,

UNITED s'ra'rps rA'rENT OFFICE.

FRANK TRAOHSLER, OF SAN FRANCISCO, CALIFORNIA.

MEANS FOR HEATING BAKERS OVENS.

Specification of Letters Patent.

Patented April 27, 1909.

Application filed September 8, 1908. Serial No. 452,046.

At present it is the general practice to l l i l i l l heat bakers ovens by means oi" a fire of;

wood built in the oven, which is removed when the oven is heated sutticiently :tor

baking. This method of heating expensive, slow and troublesome, and it is ditticult to keep the interior of the oven clean. The object of the present invention is to provide means "for heating bakers ovens,

which will be more convenient, cleanly,, rapld, and economical than those at present in use.

A further object is to provide means for heating the oven unitorn'lly in all parts thereof, and for varying the heat in any partof the oven as may be desired by any peculiarity of its formation.

In the awompanying drawing, Figure l. is

a vertical sectional view of the front of the f oven, the burner being shown in side eleva tion; Fig. 2 is a broken front view of an oven equipped with my improved burner.

Fig. 3 is a horizontal section, the burner being shown 1n plan.

Referring to the drawing, 1 indicates the wall of an oven, and "2 the door thereof. Into the opening of the door inserted a nozzle 3 connected by an elbow t to a vertical pipe 5, which is connected by a union (3 with a short. common pipe 7 connected with a tee 8, which is connected at opposite ends to pipes 9, 10, controlled by valves 11. Either of these pipes can be used for conducting gas, and the other for conducting air to the nozzle. In the present instance I have shown the pipe 9 on the right as that tor forcing air thereto.

Said pipe 9 cou nected with an .)pening on the back of the i cylinder of an air compressor at the lower 1 end thereof, the piston rod 12 of which is connected by means of a crank 13 with a shaft 14 carrying fast and loose pulleys 15, 1.6, so that said shaft 1% is rotated from an electric or other motor 17. By this means the air is forced along the pipe 9 to the nozzle. The pressure at which the air passes to the nozzle is controlled by means of one valve 11.

The union ('3 is formed with a hand wheel l8, permitting it to be readily detached, so that the burner can be quickly removed when necessary. Said union permits the vertical pipe 5 to be turned through any desired angle about its axis to direct the nozzle to any desired part of the oven, and, for the purpose of so directing it, there is clamped upon said pipe 5 a handle 19.

It has been found that with an apparatus of this character, the oven can be heated with a comparatively small expenditure of fuel. at about 40 cents at the ordinary rates. Moreover the oven can be heated very rapidly. and can he used for baking as soon as the burner is removed, and, since the nozzle can be directed to any part of the oven, the interior of the oven can be heated with great uniformity. The labor of preparing the oven for baking is reduced to a minimum.

1 claim 1. In combination with a bakers oven, a gas pipe, an air pipe, means for forcing air under pressure through said air pipe, a common pipe connected to said air and pipes to convey the commingled air and gas, a vertical pipe rotatable about its axis upon the last named pipe, a handle on said Vertical pipc whereby it may be turned, and a horizontally directed nozzle leading from said vertical pipe and directed into the interior of the oven, substantially as described.

2. In combination with a bakers oven, a gas pipe, an air pipe, means for forcing air under pressure through said air pipe, a common pipe connected to said air and pipes to convey the connningled air and gas.

a vertical. pipe, a union having a hand Wheel connecting said vertical and common pipes and permitting the vertical. pipe to be turned about its an on the common pipe, a handle on said vertical pipe whereby it may be turned. and a horizontally directed nozzle leading from said vertical pipe and directed into the interior of the oven, substantially as described.

in testimony whereof I have hereunto sct my hand in the presence of two subscribing witnesses.

FR A NK TR- A CI-l SLER.

lVitncsses FRANCIS M. \Vmon'r, D. B. RICHARDS. 

